Global Patent Index - EP 2920466 B1

EP 2920466 B1 20180711 - REAL-TIME PUMP DIAGNOSTIC ALGORITHMS AND APPLICATION THEREOF

Title (en)

REAL-TIME PUMP DIAGNOSTIC ALGORITHMS AND APPLICATION THEREOF

Title (de)

ECHTZEIT-PUMPENDIAGNOSEALGORITHMEN UND ANWENDUNG DAVON

Title (fr)

ALGORITHMES DE DIAGNOSTIC DE POMPE EN TEMPS RÉEL ET LEUR APPLICATION

Publication

EP 2920466 B1 20180711 (EN)

Application

EP 13811650 A 20131119

Priority

  • US 201261727894 P 20121119
  • US 2013070780 W 20131119

Abstract (en)

[origin: WO2014078851A2] Methods and techniques for calculating a pump card in synchronization with the surface card are described. The techniques are developed on a platform in which the finite difference method or the Fourier series method is used to solve the wave equation of a rod string for oil wells. Calculation of the first pump data point can be based on part or the complete set of the data points of the first surface stroke. A variety of techniques for displaying and erasing the surface and pump cards are described. The redundant or unnecessary calculation in both the finite difference algorithm and the Fourier series algorithm for real-time pump diagnostic is eliminated. The wave propagation delay concept is applied to the real-time pump diagnostic algorithms. The proposed methods are verified in the simulations for oil wells with single taper or multi-taper rod strings and with various pumping conditions. The proposed real-time pump diagnostic algorithm is not only suitable for the demonstrated mathematical methods but also suitable for the other mathematical methods.

IPC 8 full level

F04B 47/00 (2006.01); E21B 47/00 (2012.01); F04B 47/02 (2006.01); F04B 49/06 (2006.01)

CPC (source: EP US)

E21B 47/008 (2020.05 - US); E21B 47/009 (2020.05 - EP US); E21B 47/09 (2013.01 - US); F04B 47/02 (2013.01 - EP US); F04B 49/065 (2013.01 - EP US)

Citation (examination)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2014078851 A2 20140522; WO 2014078851 A3 20140828; CA 2891575 A1 20140522; CA 2891575 C 20210629; CN 104956030 A 20150930; CN 104956030 B 20210528; EP 2920466 A2 20150923; EP 2920466 B1 20180711; EP 3315775 A1 20180502; EP 3315775 B1 20200212; US 11639660 B2 20230502; US 2015275651 A1 20151001

DOCDB simple family (application)

US 2013070780 W 20131119; CA 2891575 A 20131119; CN 201380060375 A 20131119; EP 13811650 A 20131119; EP 17202438 A 20131119; US 201314443878 A 20131119